import auth from '@/plugins/auth'
import router, { constantRoutes, dynamicRoutes } from '@/router'
import { getRouters } from '@/api/menu'
import Layout from '@/layout/index'
import ParentView from '@/components/ParentView'
import InnerLink from '@/layout/components/InnerLink'

// 匹配views里面所有的.vue文件
const modules = import.meta.glob('./../../views/**/*.{vue,tsx,jsx}')

const usePermissionStore = defineStore(
  'permission',
  {
    state: () => ({
      routes: [],
      addRoutes: [],
      defaultRoutes: [],
      topbarRouters: [],
      sidebarRouters: [],
    }),
    actions: {
      setRoutes(routes) {
        this.addRoutes = routes
        this.routes = constantRoutes.concat(routes)
      },
      setDefaultRoutes(routes) {
        this.defaultRoutes = constantRoutes.concat(routes)
      },
      setTopbarRoutes(routes) {
        this.topbarRouters = routes
      },
      setSidebarRouters(routes) {
        this.sidebarRouters = routes
      },
      generateRoutes(roles) {
        return new Promise((resolve) => {
          // 向后端请求路由数据
          getRouters().then((res) => {
            const sdata = JSON.parse(JSON.stringify(res.data))
            const rdata = JSON.parse(JSON.stringify(res.data))
            const defaultData = JSON.parse(JSON.stringify(res.data))
            const sidebarRoutes = filterAsyncRouter(sdata)
            const rewriteRoutes = filterAsyncRouter(rdata, false, true)
            const defaultRoutes = filterAsyncRouter(defaultData)
            const asyncRoutes = filterDynamicRoutes(dynamicRoutes)

            asyncRoutes.forEach((route) => { router.addRoute(route) })
            this.setRoutes(rewriteRoutes)
            this.setSidebarRouters(constantRoutes.concat(sidebarRoutes))
            this.setDefaultRoutes(sidebarRoutes)
            this.setTopbarRoutes(defaultRoutes)
            resolve(rewriteRoutes)
          })
        })
      },
    },
  },
)

// 遍历后台传来的路由字符串，转换为组件对象
function filterAsyncRouter(asyncRouterMap, lastRouter = false, type = false) {
  return asyncRouterMap.filter((route) => {
    if (type && route.children)
      route.children = filterChildren(route.children)

    if (route.component) {
      // Layout ParentView 组件特殊处理
      if (route.component === 'Layout')
        route.component = Layout
      else if (route.component === 'ParentView')
        route.component = ParentView
      else if (route.component === 'InnerLink')
        route.component = InnerLink
      else
        route.component = loadView(route.component)
    }
    if (route.children != null && route.children && route.children.length) {
      route.children = filterAsyncRouter(route.children, route, type)
    }
    else {
      delete route.children
      delete route.redirect
    }
    return true
  })
}

function filterChildren(childrenMap, lastRouter = false) {
  let children = []
  childrenMap.forEach((el, index) => {
    if (el.children && el.children.length) {
      if (el.component === 'ParentView' && !lastRouter) {
        el.children.forEach((c) => {
          c.path = `${el.path}/${c.path}`
          if (c.children && c.children.length) {
            children = children.concat(filterChildren(c.children, c))
            return
          }
          children.push(c)
        })
        return
      }
    }
    if (lastRouter)
      el.path = `${lastRouter.path}/${el.path}`

    children = children.concat(el)
  })
  return children
}

// 动态路由遍历，验证是否具备权限
export function filterDynamicRoutes(routes) {
  const res = []
  routes.forEach((route) => {
    if (route.permissions) {
      if (auth.hasPermiOr(route.permissions))
        res.push(route)
    }
    else if (route.roles) {
      if (auth.hasRoleOr(route.roles))
        res.push(route)
    }
  })
  return res
}

export function loadView(view) {
  let res
  for (const path in modules) {
    const dir = path.split('views/')[1].split(/\.(vue|jsx|tsx)/)[0]
    if (dir === view)
      res = () => modules[path]()
  }
  return res
}

export default usePermissionStore
